Accurate and fast results The swimming pool chlorine residual detector and pH water quality detector provides quick and accurate measurements of both pH and chlorine residual levels, ensuring your pool or spa remains safe for swimmers. Tool for maintaining pH and chlorine levels This water quality testing device helps you maintain the correct balance of pH and chlorine levels in your pool or spa without guesswork. Easy to use With its electric testing system, this detector is easy to use and suitable for routine monitoring of pH and chlorine residual levels in swimming pools, spas, and other water sources. Prevents illness and infection Checking pH and chlorine levels is essential to maintaining a healthy swimming environment that prevents ear and skin infections and diarrhea caused by bacteria growth. Use scenarios Home use: monitor and maintain the pH and chlorine balance in a residential pool or hot tub to ensure a pleasant and safe swimming experience. Commercial facilities: daily monitoring in hotels, gyms, or community pools to support safe water quality for frequent swimmers. Other water sources and features: suitable for routine checks in spa areas or other water systems where pH and chlorine control are important.